A Connecting Structure for a Syringe Needle Base and a Syringe Tube in a Safety Syringe

摘要

A connecting structure for the syringe needle base and the syringe tube in the safety syringe, wherein a syringe needle base is in the shape of a column, and the front end of the syringe needle base is used for being connected with the syringe needle; the connecting structure comprises elastic connecting pieces arranged at the rear end of the syringe needle base and first connecting parts arranged at the inner side of the connecting tube; the outer sides of the connecting pieces are provided with second connecting parts; the syringe needle base is sleeved with the connecting tube; the connecting pieces are provided with an expanding part; the expanding part is abutted against the inner side of the connecting pieces so that the outer sides of the connecting pieces are expanded to be in contact with the inner side of the connecting tube.

主权项

1. A connecting structure for a syringe needle base and a syringe tube in a safety syringe, comprising:
a front end of the syringe tube (1) provided with a connecting tube (1a) that is smaller than the outer diameter of the syringe tube (1); a syringe needle base (2) in a shape of a column; a front end of the syringe needle base (2) used for connecting with a syringe needle (3); elastic connecting pieces (2a) of the connecting structure arranged at a rear end of the syringe needle base (2); first connecting parts (1a1) arranged at an inner side of the connecting tube (1a); outer sides of the connecting pieces (2a) provided with second connecting parts (2a1); and inner sides of the connecting pieces (2a) provided with an expanding part (5); wherein the syringe needle base (2) is sleeved with the connecting tube (1a); wherein the expanding part (5) is abutted against the inner sides of the connecting pieces (2a) so that the outer sides of the connecting pieces (2a) are expanded to be in contact with the inner side of the connecting tube (1a); and wherein under an expanding effect of the expanding part (5), the first connecting parts (1a1) are clamped with the second connecting parts (2a1).